textproduct: Quad Cities

KEY MESSAGES

- Quiet weather continues through Tuesday with temperatures around 80 degrees today and in the lower 80s on Tuesday.

- Warmer temperatures on Wednesday with the next chances for showers and storms. Another round of showers and storms is possible next weekend.

SHORT TERM /THROUGH TUESDAY/

Issued at 112 AM CDT Mon Aug 24 2026

Nice late August weather is forecast to continue through Tuesday. High pressure sits across the area through today. Shortwave energy moving through the flow will result in variably cloudy skies across the area today especially during the afternoon. High temepratures this afternoon will be around 80 degrees.

Tonight into Tuesday, high pressure shifts to the east of the area allowing light winds to turn to the south. Temperatures rise slightly tonight and Tuesday but the forecast continues to be dry. Low temperatues tonight are forecast to be around 60 degrees with widespread high temperatures Tuesday in the lower 80s.

LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/

Issued at 112 AM CDT Mon Aug 24 2026

Little change in the overall forecast thinking across the region over the next 7 days. Northwesterly flow continues across the Upper Midwest and Great Lakes Region. A shortwave is forecast to move into the Great Lakes Tuesday night through Wednesday night with the better forcing to our north and east. 25 to 45 percent chance of showers and storms across the area is now mainly on Wednesday morning. High temperature on Wednesday will warm into the lower to mid 80s with dewpoints in the mid to upper 60s resulting in CAPE around 500 to 1500 J/KG and 0 to 6 km shear around 30 knots may result in isolated severe storms.

High pressure is forecast to build into area for the second half of the week. The flow aloft becomes more progressive late this week into next weekend as a storm system digs into the Pacific Northwest and flattens the Plains ridge. This has been delayed from previous forecasts until the weekend. However a subtle wave Saturday will bring the potential for another round of showers and storms during the morning with a another potential round of showers and storms Sunday into Monday. Despite POPs each period Saturday through Monday, there were will be a lot of dry hours with the broad-brushed Pops being due to timing differences between different operational models and their ensembles. Temperatures gradually increase from the lower 80s on Thursday to widespread mid to upper 80s on Sunday and Monday.

AVIATION /06Z TAFS THROUGH 06Z TUESDAY/

Issued at 1222 AM CDT Mon Aug 24 2026

High pressure is forecast to sit near the Mississippi River in eastern Iowa and northwest Illinois through the Monday. This will result in light and variable winds across the area with speeds less than 5 knots. Diurnally driven cumulus is forecast to develop after 15 UTC Monday with ceilings around 5 kft. MVFR visibilities are possibly in patchy fog this morning after 08 UTC at KCID and KBRL with lower confidence that it will occur at KMLI so it was left out of that TAF sites for now. If fog does form, visibilities should quickly improve after 12 UTC.

DVN WATCHES/WARNINGS/ADVISORIES

IA...None. IL...None. MO...None.